Ethereal Exploration Guild

Ethereal Exploration Guild (EtherealX) is an Indian spacetech company founded in 2022 in Bengaluru by Manu J. Nair, Prashant Sharma, and Shubhayu Sardar, building fully reusable medium-lift launch vehicles. Its lead product, the Razor Crest Mk-1 (RCM1), targets roughly 25 tons to low Earth orbit with high launch cadence, up to 16 orbit insertions per flight, and 72-96 hour turnaround. The company has manufactured its 80kN reusable upper-stage engine (Pegasus) using a proprietary Full Flow Segregated Cooling Cycle (FFSCC) and operates a large private rocket testing facility in Cuddalore, Tamil Nadu. EtherealX has raised on the order of $26M across multiple rounds, including a Series A in December 2025. The company offers launch services rather than any developer-facing API or platform.

Ethereal Exploration Guild is profiled on the APIs.io network. Tagged areas include Company, Frontier Tech, Aerospace, SpaceTech, and Launch Vehicles.

🌐 Visit website 📡 Source on GitHub

5.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Frontier Tech AerospaceSpaceTechLaunch VehiclesReusable RocketsSpace India

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 5.0/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Ethereal Exploration Guild Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: ethereal-exploration-guild
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/ethereal-exploration-guild.png
name: Ethereal Exploration Guild
description: Ethereal Exploration Guild (EtherealX) is an Indian spacetech company founded in 2022 in Bengaluru by Manu J.
  Nair, Prashant Sharma, and Shubhayu Sardar, building fully reusable medium-lift launch vehicles. Its lead product, the Razor
  Crest Mk-1 (RCM1), targets roughly 25 tons to low Earth orbit with high launch cadence, up to 16 orbit insertions per flight,
  and 72-96 hour turnaround. The company has manufactured its 80kN reusable upper-stage engine (Pegasus) using a proprietary
  Full Flow Segregated Cooling Cycle (FFSCC) and operates a large private rocket testing facility in Cuddalore, Tamil Nadu.
  EtherealX has raised on the order of $26M across multiple rounds, including a Series A in December 2025. The company offers
  launch services rather than any developer-facing API or platform.
url: https://raw.githubusercontent.com/api-evangelist/ethereal-exploration-guild/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- prosus-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Frontier Tech
- Aerospace
- SpaceTech
- Launch Vehicles
- Reusable Rockets
- Space
- India
tags_raw:
- Company
- Frontier Tech
- Aerospace
- Spacetech
- Launch Vehicles
- Reusable Rockets
- Space
- India
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/ethereal-exploration-guild-domain-security.yml
- type: Website
  url: https://etherealx.space
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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